Title

Evaluation Of Silt Fence Materials During And After Rainfall Events

Keywords

Rainfall simulator; Silt fence; Tilting test bed; Turbidity

Abstract

Silt fence is a temporary sediment control device used on construction sites for the purpose of reducing the discharge of sediment-laden runoff. Previous studies on the performance of silt fence fabrics have evaluated the sediment removal and turbidity reduction efficiencies as the performance after a rainfall event to be the true representation of the overall efficiencies. However, recent studies at the University of Central Florida have revealed that the removal efficiencies were significantly impacted by the time of sampling, during and after the rainfall event. Runoff generated during a rainfall event caused turbulent flow conditions within the ponding water volume created by the silt fence. Due to these turbulent conditions, the settling potential of suspended solids and the removal efficiency of the silt fence were severely diminished. This paper examined the performance of woven and nonwoven silt fence fabrics in turbidity and sediment removal during and after a rainfall event. Test results show that, for a silty-sand embankment of 10H:1V and 3H:1V slope, the woven silt fence fabric achieved average turbidity reduction efficiencies of 39 and 74 percent during and after the rainfall event, respectively. The nonwoven silt fence fabric achieved turbidity reduction efficiencies of 59 and 91 percent during and after the rainfall event, respectively. Copyright © (2014) by the International Erosion Control Association.

Publication Date

1-1-2014

Publication Title

Environmental Connection Conference 2014

Volume

1

Number of Pages

264-271

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

84903576456 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84903576456

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